Claudio,
Unfortunately, this UPDATE...FROM approach does not detect ambiguities,
unless we go for tricks.
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On Fri, Nov 22, 2013 at 6:36 PM, AK wrote:
> Claudio,
>
> Can you elaborate how rules can help?
Well... that specific example:
> UPDATE accounts SET (contact_last_name, contact_first_name) =
> (SELECT last_name, first_name FROM salesmen
> WHERE salesmen.id = accounts.sales_id);
Can be
Thank you, Tom!
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Claudio,
Can you elaborate how rules can help?
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AK writes:
> 9.3 documentation says:
> According to the standard, the column-list syntax should allow a list of
> columns to be assigned from a single row-valued expression, such as a
> sub-select:
> UPDATE accounts SET (contact_last_name, contact_first_name) =
> (SELECT last_name, first_name
On Thu, Nov 21, 2013 at 3:50 PM, David Johnston wrote:
>> Why is this not implemented? Is it considered inconvenient to use, or
>> difficult to implement. or not important enough, or some other reason?
>
> I cannot answer why but I too would like to see this. I actually asked this
> a long while
AK wrote
> 9.3 documentation says:
>
> According to the standard, the column-list syntax should allow a list of
> columns to be assigned from a single row-valued expression, such as a
> sub-select:
>
> UPDATE accounts SET (contact_last_name, contact_first_name) =
> (SELECT last_name, first_na
